1. highest frequency

The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

20000Hz

Sony MDR-Z1R: 120000Hz

25000Hz

2. lowest frequency

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

20Hz

Sony MH1CBLK: 1Hz

10Hz

3. sound pressure level

Devices with a higher sound pressure level are generally louder when supplied with any given audio source.

121dB/mW

AKG K553 Pro: 144dB/mW

98dB/mW

4. no battery needed

This device works without batteries. It weighs less and you don't have to worry about recharging or replacing the battery.

Able Planet Clear Harmony NC1100B

AKG K323XS A

69% have it

5. has a detachable cable

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

Able Planet Clear Harmony NC1100B

AKG K323XS A

39% have it

6. has a tangle free cable

The cable is designed to minimize tangling.

Able Planet Clear Harmony NC1100B

AKG K323XS A

24% have it

7. has an in-line control panel

There is a control panel on the cable, so you can easily operate the device without having to interact with it.

Able Planet Clear Harmony NC1100B

AKG K323XS A

46% have it

8. can be folded

Folding devices are good for transporting as they take up less space in your bag.

Able Planet Clear Harmony NC1100B

AKG K323XS A

31% have it

9. has stereo speakers

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

Able Planet Clear Harmony NC1100B

AKG K323XS A

76% have it

10. Can be used wirelessly

Wireless devices allow users more freedom of movement.

Able Planet Clear Harmony NC1100B

AKG K323XS A

21% have it

11. has an over-the-ear form

Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.

Able Planet Clear Harmony NC1100B

AKG K323XS A

40% have it

12. has included ear pads

Allows you to change ear pads without buying new ones.

Able Planet Clear Harmony NC1100B

AKG K323XS A

42% have it

13. travel bag is included

The device comes with its own special case or pouch, which is useful for safe transportation.

Able Planet Clear Harmony NC1100B

AKG K323XS A

63% have it

14. has a straight plug

A straight plug is better when the jack is on the top or bottom of your player.

15. has active noise canceling/noise reduction

This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.

Able Planet Clear Harmony NC1100B

AKG K323XS A

13% have it

16. has an L-shaped plug

An L-shaped plug is better if the jack is on the left or right side of the device, so that the cable isn't bent, and is less likely to break when the device is in your pocket.

Able Planet Clear Harmony NC1100B

AKG K323XS A

31% have it

17. has a 3.5mm male connector

A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

Able Planet Clear Harmony NC1100B

AKG K323XS A

83% have it

18. cable length

A long cable ensures more freedom of movement.

1.5m

Pioneer SE-A1000: 6m

1m

19. has an in-ear form

The in-ear device is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. It is inserted in the ear canal itself and blocks out a lot of environmental noise. It has stronger bass tones and is unlikely to fall out of the ear.

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